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28fdbc4e30
issue: #35563 1. Use an internal health checker to monitor the cluster's health state, storing the latest state on the coordinator node. The CheckHealth request retrieves the cluster's health from this latest state on the proxy sides, which enhances cluster stability. 2. Each health check will assess all collections and channels, with detailed failure messages temporarily saved in the latest state. 3. Use CheckHealth request instead of the heavy GetMetrics request on the querynode and datanode Signed-off-by: jaime <yun.zhang@zilliz.com>
Data Node
DataNode is the component to write insert and delete messages into persistent blob storage, for example MinIO or S3.
Dependency
- KV store: a kv store that persists messages into blob storage.
- Message stream: receive messages and publish imformation
- Root Coordinator: get the latest unique IDs.
- Data Coordinator: get the flush information and which message stream to subscribe.